Paper feeding apparatus of printer

ABSTRACT

A paper feeding apparatus includes a bracket. A first feeding shaft is pivotably mounted on the bracket. A number of first feeding rollers is mounted on the first feeding shaft. The first feeding rollers rotate together with the first feeding shaft to contact a sheet of paper and move the paper forwards. A number of fans are mounted on the first feeding shaft. The fans rotate together with the first feeding shaft to drive air against the paper to prevent it becoming wrapped around one of the rollers.

BACKGROUND

1. Technical Field

The present disclosure relates to feeding apparatuses, and moreparticularly to a paper feeding apparatus of a printer.

2. Description of Related Art

Printers are often equipped with rollers to feed paper or otherprintable material into a printing area of the printer. Unfortunately,the printable material often gets wrapped around one or more rollers andjams the system.

Therefore, there is room for improvement within the art.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments can be better understood with referenceto the following drawings. The components in the drawings are notnecessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the embodiments. Moreover, in thedrawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is an exploded and isometric view of an embodiment of a paperfeeding apparatus of a printer.

FIG. 2 is an assembled view of the paper feeding apparatus of FIG. 1.

FIG. 3 is another assembled view of the paper feeding apparatus of FIG.1.

FIG. 4 is another more assembled view of the paper feeding apparatus ofFIG. 1.

DETAILED DESCRIPTION

The disclosure is illustrated by way of example and not by way oflimitation in the figures of the accompanying drawings in which likereferences indicate similar elements. It should be noted that referencesto “an” or “one” embodiment in this disclosure are not necessarily tothe same embodiment, and such references mean “at least one.”

FIG. 1 shows a paper feeding apparatus of a printer in accordance withan embodiment. The paper feeding apparatus includes a bracket 10, afirst feeding shaft 30, and a second feeding shaft 50.

The bracket 10 includes a supporting surface 11. A row of blocking pins13 and a row of restricting pieces 14 are located on the supportingsurface 11. The row of blocking pins 13 is parallel to the row ofrestricting pieces 14. Each of the row of the blocking pins 13 includesa cambered surface 131 which faces to the row of restricting pieces 14.A receiving room 16 is defined between the row of blocking pins 13 andthe row of restricting pieces 14.

A pair of supporting plates 15 are located on the supporting surface 11.Each of the pair of supporting plates 15 defines a pivot hole 151.

Opposites ends of the first feeding shaft 30 can be inserted in thepivot holes 151 of the pair of supporting plates 15. A plurality offirst feeding rollers 33 and a plurality of fans 31 are in a staggeredarrangement on the first feeding shaft 30. One of the plurality of fans31 is located between two of the plurality of first feeding rollers 33.One of the plurality of first feeding rollers 33 is located between twoof the plurality of fans 31. The plurality of first feeding rollers 33and the plurality of fans 31 are rotatable together with the firstfeeding shaft 30.

The second feeding shaft 50 can be pivotally mounted in the receivingroom 16. A plurality of second feeding rollers 53 are mounted on thesecond feeding shaft 50. In one embodiment, the plurality of firstfeeding rollers 33 and the plurality of second feeding rollers 53 aremade of rubber, which can generate large friction force to convenientlyfeed papers.

Referring to FIGS. 1 and 2, in assembly, the opposites ends of the firstfeeding shaft 30 are inserted into the pivot holes 151 of the pair ofsupporting plates 15 to pivotally mount the first feeding shaft 30 onthe bracket 10. The second feeding shaft 50 is pivotally mounted in thereceiving room 16. With this arrangement, the first feeding shaft 30 isparallel to the second feeding shaft 50. In one embodiment, the firstfeeding shaft 30 and the second feeding shaft 50 are rotated bydifferent motors. In another embodiment, the first feeding shaft 30 andthe second feeding shaft 50 are rotated by a same motor.

Referring to FIGS. 1 to 4, while the paper feeding apparatus feeds asheet of paper 80, the paper 80 is located on the first feeding shaft 30and the second feeding shaft 50. The first feeding shaft 30 and thesecond feeding shaft 50 rotate. The first feeding rollers 33 and thesecond feeding rollers 53 move the paper 80 forwards. The fans 31 rotateto drive air flowing through a wrapped portion 81 of the paper 80 tosmooth the wrapped portion 81. Therefore, the paper 80 can be avoided tobe jammed in the printer.

It is to be understood, however, that even though numerouscharacteristics and advantages of the embodiments have been set forth inthe foregoing description, together with details of the structure andfunctions of the embodiments, the disclosure is illustrative only, andchanges may be made in detail, especially in the matters of shape, size,and arrangement of parts within the principles of the present disclosureto the full extent indicated by the broad general meaning of the termsin which the appended claims are expressed.

1. A paper feeding apparatus, comprising: a bracket with a first feedingshaft pivotally mounted thereon, the first feeding shaft configured tofeed a paper, a plurality of first feeding rollers mounted on the firstfeeding shaft, the plurality of first feeding rollers is rotatabletogether with the first feeding shaft to contact the paper and move thepaper forwards; and a plurality of fans mounted on the first feedingshaft, and the plurality of fans is rotatable together with the firstfeeding shaft and the plurality of first feeding rollers to drive airflowing through a wrapped portion of the paper to smooth the wrappedportion.
 2. The paper feeding apparatus of claim 1, wherein theplurality of first feeding rollers and the plurality of fans are in astaggered arrangement on the first feeding shaft.
 3. The paper feedingapparatus of claim 2, wherein one of the plurality of fans is locatedbetween two of the plurality of first feeding rollers, and one of theplurality of first feeding rollers is located between two of theplurality of fans.
 4. The paper feeding apparatus of claim 1, whereinthe first bracket comprises a supporting surface, a pair of supportingplates are located on the supporting surface, each of the pair ofsupporting plates defines a pivot hole, and opposites ends of the firstfeeding shaft are inserted in the pivot holes of the pair of supportingplates.
 5. The paper feeding apparatus of claim 1, further comprising asecond feeding shaft pivotally mounted on the bracket, wherein thesecond feeding shaft is parallel to the first feeding shaft.
 6. Thepaper feeding apparatus of claim 5, wherein the bracket comprises asupporting surface, a row of blocking pins and a row of restrictingpieces are located on the supporting surface, a receiving room isdefined between the row of restricting pieces and the row of blockingpins, and the second feeding shaft is pivotally received in thereceiving room.
 7. The paper feeding apparatus of claim 6, wherein therow of blocking pins is parallel to the row of restricting pieces. 8.The paper feeding apparatus of claim 6, wherein each of the row of theblocking pins comprises a cambered surface which faces to the row ofrestricting pieces.
 9. The paper feeding apparatus of claim 6, wherein aplurality of second feeding rollers are mounted on the second feedingshaft and configured to rotate together with the second feeding shaft,and the plurality of first feeding rollers and the plurality of secondfeeding rollers are made of rubber, which applies friction force on thepaper.
 10. A paper feeding apparatus, comprising: a bracket comprising asupporting surface; and a first feeding shaft pivotally mounted on thesupporting surface; a plurality of first feeding rollers and a pluralityof fans in a staggered arrangement on the first feeding shaft; whereinthe plurality of first feeding rollers is rotatable together with thefirst feeding shaft to contact a paper and move the paper forwards, andthe plurality of fans is rotatable together with the first feeding shaftto drive air flowing through a wrapped portion of the paper to smooththe wrapped portion.
 11. The paper feeding apparatus of claim 10,wherein one of the plurality of fans is located between two of theplurality of first feeding rollers, and one of the plurality of firstfeeding rollers is located between two of the plurality of fans.
 12. Thepaper feeding apparatus of claim 10, wherein a pair of supporting platesare located on the supporting surface, each of the pair of supportingplates defines a pivot hole, and opposites ends of the first feedingshaft are inserted in the pivot holes of the pair of supporting plates.13. The paper feeding apparatus of claim 10, further comprising a secondfeeding shaft pivotally mounted on the bracket, wherein the secondfeeding shaft is parallel to the first feeding shaft.
 14. The paperfeeding apparatus of claim 13, wherein a row of blocking pins and a rowof restricting pieces are located on the supporting surface, a receivingroom is defined between the row of restricting pieces and the row ofblocking pins, and the second feeding shaft is pivotally received in thereceiving room.
 15. The paper feeding apparatus of claim 14, wherein therow of blocking pins is parallel to the row of restricting pieces. 16.The paper feeding apparatus of claim 14, wherein each of the row of theblocking pins comprises a cambered surface which faces to the row ofrestricting pieces.
 17. The paper feeding apparatus of claim 14, whereina plurality of second feeding rollers are mounted on the second feedingshaft and configured to rotate together with the second feeding shaft,and the plurality of first feeding rollers and the plurality of secondfeeding rollers are made of rubber, which applies friction force on thepaper. 18-19. (canceled)